code: def test_encoder_on_cuda(self):
      self.run_test_encoder_on_device("cuda")
  
file_path: lightwood/tests/unit_tests/encoder/images/test_img_2_vec.py
imports: import unittest
  import torch
  from torch import Tensor
  from lightwood.encoder.image import Img2VecEncoder
  import os
label_desc: Use image node_id 4 for calling the TestImg2VecEncoder obj's underlying member method code with example usage: obj.test_encoder_on_cuda() without return types